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Stream.CopyTo Method (Stream)

Reads the bytes from the current stream and writes them to the destination stream.

Namespace:  System.IO
Assembly:  mscorlib (in mscorlib.dll)
public void CopyTo(
	Stream destination
)

Parameters

destination
Type: System.IO.Stream
The stream that will contain the contents of the current stream.
ExceptionCondition
ArgumentNullException

destination is null.

NotSupportedException

The current stream does not support reading.

-or-

destination does not support writing.

ObjectDisposedException

Either the current stream or destination were closed before the CopyTo method was called.

IOException

An I/O error occurred.

Copying begins at the current position in the current stream.

The following example copies the contents of a FileStream to a MemoryStream.


// Create the streams.
MemoryStream destination = new MemoryStream();

using (FileStream source = File.Open(@"c:\temp\data.dat",
    FileMode.Open))
{

    Console.WriteLine("Source length: {0}", source.Length.ToString());

    // Copy source to destination.
    source.CopyTo(destination);
}

Console.WriteLine("Destination length: {0}", destination.Length.ToString());


.NET Framework

Supported in: 4

.NET Framework Client Profile

Supported in: 4

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
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